Mean first-passage time for random walks on the T-graph
Abstract
For random walks on networks (graphs), it is a theoretical challenge to explicitly determine the mean first-passage time (MFPT) between two nodes averaged over all pairs. In this paper, we study the MFPT of random walks in the famous T-graph, linking this important quantity to the resistance distance in electronic networks. We obtain an exact formula for the MFPT that is confirmed by extensive numerical calculations. The interesting quantity is derived through the recurrence relations resulting from the self-similar structure of the T-graph. The obtained closed-form expression exhibits that the MFPT approximately increases as a power-law function of the number of nodes, with the exponent lying between 1 and 2. Our research may shed light on the deeper understanding of random walks on the T-graph.
Keywords
Cite
@article{arxiv.0907.3251,
title = {Mean first-passage time for random walks on the T-graph},
author = {Zhongzhi Zhang and Yuan Lin and Shuigeng Zhou and Bin Wu and Jihong Guan},
journal= {arXiv preprint arXiv:0907.3251},
year = {2009}
}
Comments
Definitive version accepted for publication in New Journal of Physics